Figure 1: (a) Aortography with a pigtail catheter showing the anomalous origin of the coronary artery from the ascending aorta. (b) Coronary artery angiography with 5-Fr Amplatz Left-1 (AL-1) diagnostic catheter showing the single coronary trunk. (c) Right anterior oblique view showing critical stenosis in the middle segment of the left anterior descending (LAD) artery. A 0.014-inch guide wire was advanced into the LAD in order to stabilize the diagnostic catheter.